# High Energy, Nuclear, Particle Physics

- Properties, relationships, and interactions of subatomic particles. Exp. & theo. physics of nuclei & elementary particles
 Meta Thread / Thread Starter Last Post Replies Views Views: 426 Announcement: Follow us on social media and spread the word about PF! Jan16-12 Pinned: Higgs particle is 'found' ( 1 2 3 ... Last) God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered... Jul18-14 12:32 PM ChrisVer 187 61,757 Pinned: Forum Rules Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a... Feb23-13 08:41 AM ZapperZ 1 25,757 Take a look at the attachment, my question is obvious from the colored points. The attachment is from:... Aug4-14 11:14 PM Greg Bernhardt 1 512 I am not well versed in the idea of Higgs mechanism. However, I was wondering if it does explain the problem of... Aug2-14 10:50 PM Einj 5 550 I was reading about Fermilab moving their new storage ring to the Muon Campus for the Muon g-2 experiment. I was... Aug2-14 05:28 PM Vanadium 50 6 429 Why is there seemingly so little interest among particle physicists about discovering the graviton? Is it because it... Aug2-14 03:10 PM mfb 4 492 I would like to ask when can someone add the width in a scalar particle's propagator. In general the scalar propagator... Aug1-14 01:31 PM The_Duck 8 459 Hi, I recently attended several lectures on the topic of neutrino astrophysics. I wanted to verify some of the fact... Aug1-14 11:56 AM Matterwave 4 495 I was wondering if someone could explain to me how you determine how a Baryon/Meson decays, meaning Strong decay, Weak... Aug1-14 08:49 AM ChrisVer 13 474 The uuu hadron doesn't violate Pauli's exclusion principle presumably because there is color. But even without... Aug1-14 04:59 AM Orodruin 12 447 Hi all, I try to find the detailed calculations of the couplings of sfermions to the lightest h Higgs boson in... Aug1-14 12:25 AM Safinaz 2 396 When the Z boson is around can a neutrino interact with a particle other than an electron? And how does the neutrino... Jul31-14 03:30 PM mfb 22 851 Of the 61 known elementary or fundamental particles, which ones exist in the everyday, "natural" world of the Earth,... Jul30-14 03:23 PM ChrisVer 2 365 Hi guys, I have a question about symmetry breaking in Susy, I hope it won't be so naive that I just started to... Jul30-14 03:02 PM ChrisVer 3 332 Binding energy is typically used to talk about the amount of energy needed to separate bound particles. This means... Jul30-14 02:41 PM mfb 12 591 i searched Steven weinberg in google scholar. it returns many articles but "a model of leptons" why does "a model of... Jul29-14 02:11 PM Greg Bernhardt 1 576 Three questions, In a femtosecond laser, or any laser for that matter, how is a pulse generated from noise? how do... Jul29-14 02:11 PM Greg Bernhardt 1 853 Hello! I'm not entirely sure this is very "scientific", but I have an idea that I would like some feedback on. I... Jul29-14 01:12 AM Whyisthat21 3 780 So I've been researching Dense Plasma Focus devices for a while now and a question just occured to me. Since the fill... Jul28-14 10:31 PM Warpspeed13 2 1,199 I would like to ask, to make it clearer to me, what does chirality means? and how can someone see whether his theory... Jul28-14 05:01 PM Greg Bernhardt 1 1,312 What's the difference between a neutrino and a Muon? Will a neutrino induce fusion the same as a muon? Does muon... Jul28-14 07:42 AM Orodruin 7 491 I am trying to derive the algebra and I get a factor of 2 wrong... Consider the Lorentz group elements near the... Jul27-14 02:40 PM samalkhaiat 9 1,119 The action for Yang-Mill's theory is often written as  S= \int \frac{1}{4}\text{Tr} (F^{\mu \nu} F_{\mu \nu})d^4 x... Jul27-14 02:12 PM samalkhaiat 2 467 I have three questions about ICF, in the explanations i have read on the internet about ICF they all explain that the... Jul27-14 10:50 AM the_wolfman 1 540 http://en.wikipedia.org/wiki/Inelastic_collision An inelastic collision, in contrast to an elastic collision, is a... Jul27-14 08:27 AM Vanadium 50 2 432 A charged lepton can absorb a W+ boson and be converted into a neutrino, and visa versa. The neutrino has such small... Jul25-14 08:39 PM ChrisVer 4 861 Hey everyone i'm new here and this is my first thread, although i have great interest in chemistry and physics my... Jul25-14 06:53 PM mfb 2 641 So I've done some research, but to no avail. Can anyone link me to some reasonably detailed information regarding the... Jul25-14 06:36 PM mfb 6 1,017 I understand that, for example, a thick enough sheet of lead can absorb gamma radiation, but I want to understand what... Jul20-14 05:42 PM mathman 1 1,021 https://lh4.googleusercontent.com/-MODAPtaDFhY/U8utJMbxycI/AAAAAAAAWcQ/TtLYdzqeoLM/w266-h259-no/IMG_20140720_075036.jpg... Jul20-14 09:50 AM anorlunda 2 919 I am new to QFT and found myself wondering the following. Particle physics experiments usually consist of looking at... Jul20-14 04:57 AM DarMM 7 2,988 I read some of the articles related to particle physics experiment and don't know the meaning of it. 1. minimum... Jul19-14 04:50 PM mfb 3 1,128 I had an argument at my university about it, since experiments at LHC aren't 100% confirmed. I mean, gauge theories... Jul19-14 04:14 PM tahlaskerssen 9 1,220 Hi all! I am not sure how to prove mathematically that the expression for the probability that a neutrino... Jul18-14 08:50 AM Trifis 7 2,548 When a proton collides with a proton say at the LHC, is vacuum field theory used? It seems like you shouldn't have to... Jul17-14 04:48 PM mfb 4 2,014 I don't understand why antimatter exists in the first place. Could you explain why and how an asymmetry developed... Jul16-14 04:59 PM phinds 7 2,815 In a comment http://motls.blogspot.com.es/2014/07/cms-sees-650-gev-leptoquarks.html#comment-1479399237 to Motl's blog,... Jul16-14 07:11 AM arivero 5 1,835 Hi. on page 95 , I am not sure how did he derive the second term on the RHS of equation (13.16). ... Jul15-14 11:36 AM MathematicalPhysicist 4 1,597 If one has a 4-fermion vertex, like in Fermi theory : ##G_f (f_1 \Gamma f_2)(l_1 \Gamma l_2)## And you are... Jul15-14 08:39 AM Hepth 2 1,470 Since plants contain proteins that help them identify gravity in order to grow the right way, and they also contain... Jul14-14 04:13 PM Ryan_m_b 13 2,430 I was curious as to the difference in free neutron decay and the lack of decay when bound in a nucleus. I found the... Jul14-14 03:53 PM mfb 5 1,920 Greetings to all I had some problems using MCNP5 for gamma shielding calculation. The original input file is from a... Jul14-14 02:11 PM salmankhan 14 4,526